Revolving door construction



June 22, 1937.

J. w. SHIELDS 2,084,781

REVOLVING DOOR CONSTRUCTION Filed May 10', 1955 :5 Sheets-Sheet 1 I:1=. l 5

A TTORNEY 3 Sheets-Sheet 3 IN V ENTOR.

ZL /d A, A TTORNE Y J- W. SHIELDS Filed May 10, 1935 June 22, 1937,

' I REVOLVING Boon CONSTRUCTION Patented June 22, 1937 STATES PATNT @FFICE niesne assignments,

to International Door Company, Evansville, 1116., a corporation of 11- linois Application May 10, 1935, Serial No. 20,844

11 Claims.

My invention relates generally to revolving doors and more particularly to an improved construction for the wings and abutments of a revolving door installation.

One of the objects of my invention is to provide a construction of revolving door having an improved form of laminated surface structure for the segmental abutments and wings of the revolving door.

Another object of my invention is to provide a construction of metallic facing means for each terminus of the segmental abutments for revolving doors.

Still another object of my invention is to provide a construction of segmental abutment for revolving doors having means for continuously ventilating the core structure of the segmental abutments interiorly of a laminated surface covering for the segmental abutments.

A further object of my invention is to provide a wing structure for revolving doors including ventilating passages extending longitudinally through the wing structure for preventing detrimental effects of moisture upon the wing structure.

A still further object of my invention is to provide a construction of segmental abutment for revolving doors comprising a multiplicity of sections each secured by interlocking dovetail connections.

Still another object of my invention is to provide an end post construction for the segmental abutment of a revolving door structure where the end post is integrally united with the opposite ends of the segmental abutment and provided with covering means extending over the end post and over opposite sides of the segmental abutment.

Another object of my invention is to provide a construction of wooden wing for a revolving door system having extruded metal hardware reinforcements forming abutments for surface laminations and glass constituting part of the wing structure.

Still another object of my invention is to provide a construction of wing for revolving doors having a flexible weather strip connected with the moving edge thereof and having a resilient metallic reinforcement embedded therein.

A still further object of my invention is to provide a construction of metallic molding having extruded portions thereon forming interlocking joints with parts of the wing structure for insuring against seepage of moisture into the wing structure.

Other and further objects of my invention reside in the construction of revolving door wing system and arrangement of abutments as set forth more fully in the specification hereinafter following by reference to the accompanying 5 drawings, in which:

Figure l is a front elevation of the revolving door structure showing how the coacting segmental abutments are mounted with respect to the building structure; Fig. 2 is a horizontal sectional view taken substantially on line 22 of Fig. 1; Fig. 3 is a front elevation of one of the wings detached from the door; Fig. 4 is a horizontal sectional view on an enlarged scale, taken substantially on line 4-4 of Fig. 3; Fig. 5 is a transvertical section taken on line 5-.5 of Fig. 3; Fig. 6 is a fragmentary sectional perspective view of the inner metallic facing strip carrying the integral inwardly extending fastening ribs; Fig. 7 is a similar view showing the means for confining the transparent plate; Fig. 8 is a sectional perspective view showing more particularly the means for confining the strip of rubber; Fig. 9 is a front view of the strip of resilient material showing the steel spring embedded therein; Fig. 10 is a horizontal section taken on line llll0 of Fig. 9; Fig. 11 is a horizontal sectional view on an enlarged scale showing in detail the construction of the substantially semi-circular abutments with which the wings of the revolving 3O door coact; Fig. 12 is a fragmentary horizontal sectional view showing the extreme outer end of the laminated abutment; Fig. 13 is a fragmentary vertical section taken on line I3|3 of Fig. 11; Fig. 14 is a vertical transverse section taken on line l4l4 of Fig. 11; Fig. 15 is a fragmentary sectional view of the outer metallic facing strip; Fig. 16 is a similar view of the strips of metal employed to fasten the two sections together at their meeting central face; and Fig. 1'7 is a detailed perspective view of the locking strip uniting these sections.

The revolving door of my invention has proven very effective in manufacture and use. My invention makes practical the construction of re- 45 volving door abutments from laminated sheet material constituting surfacing means for a revolving door abutment or wing structure. A special construction is provided for reducing the effects of moisture upon the laminations which comprise surface means for the abutments and wings of the revolving door. A wooden core structure is provided for both the abutments and the wings. Longitudinally extending ventilating passages are formed in the core structure of the door wings and abutments and serve to maintain the door wings and abutments relatively free of detrimental effects of moisture. The segmental abutments are formed in sections which are connected through a special dovetail coupling unit. The segmental core is covered with laminations such as Formica, wood, veneer, sheet metal, or any other sheet material that can be glued to the wood core. The end facing for the laminated abutment including the wood core structure with facings thereon interlocks with the abutment by means of inwardly directed lugs which are em bedded in the material of the abutment and interlocked therewith. Each revolving door wing is formed from wood having longitudinally extending ventilated passages therein and metallic reinforcing means connected peripherally of the wing having extruded portions forming limiting abutments for the glass and laminations of the wing. The hardware is so constructed as to support a weather strip at the extremity of the wing where the weather strip is formed of a resilient material such as rubber with an embedded metallic reinforcement therein. The hardware which extends peripherally of the door structure is. pro:

vided with a metallic molding having extruded portions thereon which serve as means for sealing the edges of the wing against the seepage of moisture.

My invention will be more fully understood by detailed reference to the drawings in which reference character -I designates a base structure on which the revolving door is mounted. Horizontally extending weather strip members 2 and 3 are shown adjacent the base and top of the revolving door wings. The revolving door abutments are shown at 4 and 5 and are represented in Fig. 2 in schematic arrangement with respect to the wings B of the revolving door. The wing structure is illustrated more clearly in Figs. 3-10. Each wing is vmade up of a wood core having aligned sections 1 abutting edge to edge with longitudinally extending ports 8 intermediate the junctions of the abutting edges of the sections 1 and forming ventilating passages through the door structure.

The wood core 1 thus equipped with a multiplicity of parallel extending ventilating passages is provided with a plurality of surface laminations extending on each side of the core structure.

For this purpose, I may employ sheets of wood,

metal, Formica, micarta, or sheets of a phenol condensation product or other material. The laminated sheets of the same or difierent materials are represented generally at 9, l0 and II, and I2, I4 and I 5 on opposite sides of the wood core structure 7. The ends of laminated sheets aremaintained in position with respect to the core structure 1 in a very special manner by means of. a metallic molding. The metallic molding is formed along the inner edge of the wing, as indicated at IS with a curved face having side portions ll coextensive therewith and inwardly directed extruded portions I8 which serve as abutments for the edges of the laminations in cooperation with the filler member [9. The outer edge of the door is provided with a metallic molding 20 having coextensive side portions 2| which extend over the edges of the laminations and which are provided with inwardly directed extruded lug portions 22 which serve as edge abutments for the laminations in coaction with the filler member 23. The molding 20 is provided with a. pair of parallel extending jaws 24 having recesses 24a therein for gripping the weather strip 25.

The weather strip 25 is shown more particularly in Fig. as comprising the resilient body structure 26 having a resilient embedded core 2'5 which serves to maintain the weather strip in a substantially radial position and allows the weather strip to function over a relatively long period of time. The resilient embedded core 2'! is relatively flat and is reduced in mass by reason of the apertures Zia which are stamped therein. Also, the apertures Z'ia allow resilient material of the body structure 26 to be vulcanized around the resilient metal insert 27. The resilient body structure 26 is provided with an enlarged longitudinally extending peripheral edge portion 26a which is gripped in the recesses 24a formed in the parallel extending jaws 24. The ability of the weather strip shown at 25 and at 2 and 3 to remain in a radially extending plane insures a weathertight joint between the wings and the revolving door abutments.

Metallic molding similar to metallic molding 28 extends along the upper peripheral edge of each door wing, as indicated at 29, and along the lower edge of each door wing, as represented at 30. The molding 29 shown more particularly in Fig. 5 is provided with downwardly extending side portions 36 each having inwardly extruded tongues 32 which serve as abutments and stops for the laminated sheets l2, It and I5 and 5, l9 and H which extend on opposite sides of the wood core I. A horizontally extending filler member 33 serves to complete the abutting edge against which the laminated sheets l2, I4 and I5 I and 9, l0 and H are supported.

The glass for the door wings shown at 34 is secured within the plane of the door structure by means of molding formed by coacting metallic members 35 and 36. The coacting members are illustrated more particularly in Fig. '7. It will be seen that member 35 comprises a naetallic molding having side portions 31 which engage the laminated sheets forming the side walls of the wing. The molding is secured centrally by suitable screws 38 passing through apertures 39 in the molding to the wood core 1. The mold section 36 is secured to the core 1 and disposed in relation to the mold section 35 by means of screws 49 which pass through apertures 4! in mold section 36 and apertures 42 in mold section 35 and are embedded in wood core I. The coacting mold sections 35 and 36 serve to grip a rubber, felt, or putty-like core therein which serves as. a seal against the seepage of moisture around the peripheral edges of glass plate 35. The assembly of the mold sections is extremely simple and the construction is inexpensive.

The abutments for the revolving door are constructed from segmental sections of wood shown more particularly in Figs. 11 and 12 where the segments of wood are illustrated at 33 aligned edge to edge and provided with longitudinally extending apertures or ventilating ports 44 therebetween. The ventilating ports may be of any shape, that is, round, square or otherwise, and the purpose of the ports, regardless of their shape, is to permit the escape of moisture from the wood core 43 after the laminated sheets of metal, Formica, wood, rnicarta, or sheets of a phenol condensation product have been assembled over the opposite surfaces of the wood core structure. That is to say, the laminated sheets of material are arranged as indicated at 35, 46, il, it, 49, and 58 on opposite sides of the core structure 43. The veneer sheets constituting the laminated surface extend the entire height of the revolving door structure, that is, a distance which is generally more than eight feet high and, accordingly, the release of moisture is a highly important item. Ordinarily, moisture would have to travel from the center of the wall out to the ends of the abutment. The maximum travel of the moisture would be approximately one-half of the length of the abutment under normal circumstances. In the construction provided by my invention, the moisture is released as shown more particularly in Fig. 14. The path for the release of moisture is shown by the arrows which represent the longitudinal passage of air between the segmental sections 43 constituting the wood core for the laminated structure comprising the abutment.

The ends of the abutment terminate in a novel manner. I provide a filler member 5! between the laminated sheets 45 and 56 over which the metallic end plate 52 is fitted. The metallic end plate 52 has extruded prongs 53 thereon and side engaging portions 54. The extruded prongs 53 serve to anchor the end plate 52 with respect to the filler 5|. The side portions 54 serve to engage the edges of the laminations 65 and 56 so completely that moisture is prevented from entering the wood core from any point exterior to the abutment. The construction of the end plate is shown more clearly in Fig. 15 from which it, will be observed that no screws are required for securing the end plate with respect to each end of the abutment.

The abutment is formed by segmental members 43 secured together in two half sections.

The half sections of the abutments are fastened by means of a dove-tailed key section coupling unit. The construction of the dove-tailed key section coupling unit will be understood more fully by reference to Fig. 16 from which it will be seen that the adjacent edge faces of each half section of the abutment are engaged by complementary plate members 55 and 56. The coacting plate members 55 and 56 each include a central longitudinally extending groove shown at 51 and 58. The longitudinally extending grooves 51 and 58 have their side walls converging towards the exterior face of the plate. The plate members 55 and 56 are secured to the abutting edges of the sections of the abutment by means of screws indicated generally at 59 and 60 which pass through apertures in the plate members 55 and 56 and are embedded in the wood core of the segmental abutment. The laminated faces of the sections of the abutment are secured by the end plates 55 and 56 by reason of the overlapping edges GI and 62 respectively provided thereon. The overlapping edges BI and 62 engage and retain in position the laminated surface sheets which cover the wood core constituting the segmental abutments. The plate members 55 and 56 are secured in alignment by means of the dove-tailed key strip 63 shown more clearly in Fig. 17. The dove-tailed key strip serves to maintain the adjacent edges of the sections of the abutment in alignment at the same time that seepage of moisture through the laminated sheets is prevented.

The door and panel construction of my invention is employed particularly in the production of revolving doors and panels having weatherproof surfaces, but the construction hereinbefore disclosed may be employed in the making of doors and panels of any description.

I have described my invention in certain preferred embodiments, but I fully understand that modifications may be made in the construction and arrangement of parts of the wings and abutments and it is not my intention to limit my invention to the particular forms illustrated. Various modifications and changes l the arrangement of parts may be made within the scope of the appended claims without departing from my invention.

What I claim as new and desire to secure by Letters Patent of the United States is as follows:

1. A segmental abutment for revolving doors comprising a multiplicity of longitudinally ex tending sections aligned edge to edge with longitudinally extending ventilating passages therebetween, said sections being formed in complementary groups, plate members capping the ex-- posed edges of each of said groups of sections, the plate members on the abutting edges of said groups of sections being aligned face to face, and a coupling element interconnecting said last mentioned plate members.

2. A segmental abutment for revolving doors comprising a multiplicity of longitudinally extending sections aligned edge to edge with longitudinally extending ventilating passages therebetween, said sections being formed in complementary groups, plate members capping the exposed edges of each of said groups of sections, the plate members on the abutting edges of said groups of sections being aligned face to face, longitudinally extending grooves formed in each of said last mentioned plate members, and a coupling element extending interiorly with respect to each of said grooves and disposed longitudinally of said abutment.

3. A segmental abutment for revolving doors comprising a multiplicity of longitudinally extending sections aligned edge to edge with longitudinally extending ventilating passages therebetween, said sections being formed in complementary groups, plate members capping the exposed edges of each of said groups of sections, the plate members on the abutting edges of said groups of sections being aligned face to face, aligned longitudinally extending grooves in each of said last mentioned plates, said grooves having their side walls converging towards each other, and a preformed coupling member extending into each of said grooves.

4. A segmental abutment for revolving doors comprising a multiplicity of longitudinally extending sections aligned edge to edge with longitudinally extending ventilating passages therebetwcen, said sections being formed in complementary groups, plate members capping the exposed edges of each of said groups of sections, the plate members on the abutting edges of said groups of sections being aligned face to face. centrally disposed longitudinally extending grooves formed in each of said last mentioned plates, said grooves having the walls thereof converging towards each other, and a coupling element having the walls thereof conforming in contour to the converging sides of said grooves and providing means interconnecting the complementary groups of sections forming said segmental abutment.

5. In a revolving door, a segmental abutment having laminated sheets of material extending over opposite surfaces thereof, a post connected with each end of said segmental abutment, the opposite sides of said posts being formed on radii different from the radii on which said segmental abutments are formed, and a cover portion for said post extending over the exterior of said laminated sheets of material.

6. In a revolving door structure, a segmental abutment, an expanded terminus portion forming a post integrally connected with each of the opposite end portions of said segmental abutment, laminated sheet-like material extending over the opposite surface of said abutment, and metallic members extending over the edges of said post and having means sealing said laminated sheet-like material with respect to said segmental abutment.

7. A segmental abutment for revolving doors, comprising a laminated panel structure having a Weatherproof surface lamination, and a post formed integrally with said panel structure and having the said weatherproof surface lamination coextensive thereover.

8. In a revolving door, a pair of segmental abutments each comprising a pair of curved sections longitudinally coupled edge to edge, and an enlarged vertically extending end post formed integrally with the opposite extremities of each of said sections. I

9. In a revolving door, a pair of segmental abutments each comprising a pair of curved sections longitudinally coupled edge to edge, and integrally formed end posts on the opposite extremities of said sections, said end posts having a transverse width substantially larger than the transverse width of the Wall constituted by said sections for imparting rigidity to said sections.

10. In a revolving door, a pair of segmental abutments each comprising a pair of curved sections longitudinally coupled edge to edge with their concave faces directed toward each other, said abutments constituting an enclosure for a revolving door and having their opposite remote longitudinal edges curved in opposite directions with their convex faces directed toward each other.

11. In a. revolving door, a pair of curved abutments having their concave faces directed toward each other and constituting an enclosure for a revolving door, said abutments having their opposite remote edges curved in opposite directions with their convex faces directed toward each other, the said remote edges terminating in integrally formed end posts having transverse sections substantially larger than the transverse width of said abutments for increasing the rigidity of said abutments.

JOHN W. SHIELDS. 

